Organic light-emitting display device having plural emitting layers disposed between two electrodes
An organic light-emitting display device includes a substrate which includes a plurality of areas, a plurality of first electrodes disposed on the areas of the substrate, respectively, a second electrode disposed on the first electrodes, and a plurality of emitting layers disposed between the first electrodes and the second electrode. At least two of the emitting layers are disposed on all of the areas.
1. An organic light-emitting display device comprising:
a substrate comprising a plurality of areas including a first area, a second area, and a third area;
a plurality of first electrodes disposed on the areas of the substrate, respectively;
a second electrode disposed on the first electrodes; and
a plurality of emitting layers, including a first emitting layer, a second emitting layer, and a third emitting layer, disposed between the first electrodes and the second electrode,
wherein the first emitting layer is disposed exclusively within the first area,
wherein the third emitting layer has a substantially planar shape across the first, second, and third areas, and
wherein the second emitting layer is disposed within the first, second, and third areas.
2. The display device of claim 1 , wherein the first emitting layer is disposed in direct contact with the second emitting layer and the first emitting layer is not in contact with the third emitting layer.
3. The display device of claim 2 , wherein the first emitting layer is configured to emit red light, wherein the second emitting layer is configured to emit green light, and wherein the third emitting layer is configured to emit blue light.
4. The display device of claim 1 , wherein the first emitting layer is disposed between the second emitting layer and the third emitting layer, wherein the second emitting layer is disposed between the first emitting layer and the second electrode, and wherein the third emitting layer is disposed between the first emitting layer and the first electrodes.
5. The display device of claim 3 , wherein the second emitting layer has an electron transport capability, and the third emitting layer has a hole transport capability.
6. The display device of claim 1 , further comprising a plurality of auxiliary layers disposed between the first electrodes and the second electrode, wherein the auxiliary layers are disposed between the second emitting layer and the third emitting layer.
7. The display device of claim 6 , wherein the auxiliary layers comprise a first auxiliary layer and a second auxiliary layer, wherein the first auxiliary layer is disposed between the first emitting layer and the third emitting layer in the first area, and the second auxiliary layer is disposed between the second emitting layer and the third emitting layer in the second area.
8. The display device of claim 7 , wherein the auxiliary layers further comprise a third auxiliary layer, wherein the third auxiliary layer is disposed between the first auxiliary layer and the third emitting layer and/or between the second auxiliary layer and the third emitting layer and wherein the third auxiliary layer comprises a P-type dopant.
9. The display device of claim 1 , further comprising:
a first medium layer disposed between the first electrodes and the emitting layers and wherein the first medium layer is configured to inject or transport electrons or holes; and
a second medium layer disposed between the emitting layers and the second electrode and wherein the second medium layer is configured to inject or transport electrons or holes,
wherein at least one of the first medium layer and the second medium layer comprises an inorganic material.
10. The display device of claim 9 , wherein the inorganic material comprises at least one of tungsten oxide and nickel oxide.
11. An organic light-emitting display device comprising:
a substrate comprising a first area, a second area, and a third area;
a first electrode disposed on the first, second, and third areas of the substrate;
a second electrode disposed on the first electrode;
a first auxiliary layer located in the first area; and
a plurality of emitting layers located in the first, second, and third areas and disposed between the first electrode and the second electrode,
wherein the emitting layers comprise:
a first emitting layer disposed exclusively within the first area, between the first auxiliary layer and the second electrode;
a second emitting layer disposed within the first, second, and third areas, between the first emitting layer and the second electrode; and
a third emitting layer having a substantially planar shape across the first, second, and third areas, and disposed between the first electrode and the first auxiliary layer.
12. The display device of claim 11 , further comprising a second auxiliary layer located in the second area and disposed between the second emitting layer and the third emitting layer.